Holocene environmental change and vegetation contraction in the Sonoran Desert

Auteurs :
MCAULIFFE, J.R.
MCDONALD, E.V.

Description :
The AA. investigate 2 kinds of distinct micro-topographic features that commonly occur on broad, planar surfaces of barren desert pavements in the Sonoran Desert : plant scar mounds and plant scar depressions. Eidence is presented that both features originated beneath widely spaced, long-lived perennial plants that have long since disappeared. They also present information on contrasting spatial distributions of the 2 kinds of plant scars and implications of these differences to interpretations regarding timing and causes of ecological change during the late Quaternary.


Type de document :
Article de périodique

Source :
Quaternary research, issn : 0033-5894, 2006, vol. 65, n°. 2, p. 204-215, nombre de pages : 12, Collation : Illustration, Références bibliographiques : 28 ref.

Date :
2006

Editeur :
Pays édition : Etats-Unis, San Diego, CA, Elsevier